Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization

Nikolaus Klaus Metzger, Roman Spesyvtsev, Graham D. Bruce, Bill Miller, Gareth T. Maker, Graeme Malcolm, Michael Mazilu, Kishan Dholakia

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The accurate determination and control of the wavelength of light is fundamental to many fields of science. Speckle patterns resulting from the interference of multiple reflections in disordered media are well-known to scramble the information content of light by complex but linear processes. However, these patterns are, in fact, exceptionally rich in information about the illuminating source. We use a fibre-coupled integrating sphere to generate wavelength-dependent speckle patterns, in combination with algorithms based on the transmission matrix method and principal component analysis, to realize a broadband and sensitive wavemeter. We demonstrate sub-femtometre wavelength resolution at a centre wavelength of 780 nm, and a broad calibrated measurement range from 488 to 1,064 nm. This compares favourably to the performance of conventional wavemeters. Using this speckle wavemeter as part of a feedback loop, we stabilize a 780 nm diode laser to achieve a linewidth better than 1 MHz.
LanguageEnglish
Article number15610
Number of pages8
JournalNature Communications
Volume8
DOIs
Publication statusPublished - 5 Jun 2017

Fingerprint

Wavemeters
Speckle
Lasers
Stabilization
stabilization
broadband
Light
Wavelength
Semiconductor Lasers
speckle patterns
Principal Component Analysis
wavelengths
lasers
Optical fiber coupling
rangefinding
principal components analysis
matrix methods
Linewidth
illuminating
Principal component analysis

Keywords

  • wavemeter
  • lasers
  • speckle
  • spectrometer

Cite this

Metzger, N. K., Spesyvtsev, R., Bruce, G. D., Miller, B., Maker, G. T., Malcolm, G., ... Dholakia, K. (2017). Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization. Nature Communications, 8, [15610]. https://doi.org/10.1038/ncomms15610
Metzger, Nikolaus Klaus ; Spesyvtsev, Roman ; Bruce, Graham D. ; Miller, Bill ; Maker, Gareth T. ; Malcolm, Graeme ; Mazilu, Michael ; Dholakia, Kishan. / Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization. In: Nature Communications. 2017 ; Vol. 8.
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Metzger, NK, Spesyvtsev, R, Bruce, GD, Miller, B, Maker, GT, Malcolm, G, Mazilu, M & Dholakia, K 2017, 'Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization' Nature Communications, vol. 8, 15610. https://doi.org/10.1038/ncomms15610

Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization. / Metzger, Nikolaus Klaus; Spesyvtsev, Roman; Bruce, Graham D.; Miller, Bill; Maker, Gareth T.; Malcolm, Graeme; Mazilu, Michael; Dholakia, Kishan.

In: Nature Communications, Vol. 8, 15610, 05.06.2017.

Research output: Contribution to journalArticle

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AU - Spesyvtsev, Roman

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AU - Maker, Gareth T.

AU - Malcolm, Graeme

AU - Mazilu, Michael

AU - Dholakia, Kishan

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